System and a method of processing audio data, a program element and a computer-readable medium

a technology of audio data and program elements, applied in the field of system and method of processing audio data, can solve the problems of insufficient poor quality of audio signals processed by encoders/decoders and in particular compressed audio data, and hard work of mp3 algorithms to ensure human listeners cannot detect sounds, etc., to achieve the effect of improving the subjective quality of decoded audio data and requiring less effor

Inactive Publication Date: 2009-07-16
KONINKLIJKE PHILIPS ELECTRONICS NV
View PDF17 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]It is an object of the invention to improve the subjective quality of decoded audio data with few effort.

Problems solved by technology

Thus, MP3 algorithms work hard to ensure that human listeners cannot detect the sounds it removes, by modelling characteristics of human hearing such as noise masking.
In other words, audio signals processed by encoders / decoders and in particular compressed audio data frequently suffer from poor quality.
Thus, the systems of processing audio data according to the prior art have the disadvantage that, particularly under critical circumstances, the quality of decoded audio data is not sufficient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and a method of processing audio data, a program element and a computer-readable medium
  • System and a method of processing audio data, a program element and a computer-readable medium
  • System and a method of processing audio data, a program element and a computer-readable medium

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0068]In the following, referring to FIG. 1, a system 100 of processing audio data according to the invention will be described in detail.

[0069]The system of processing audio data 100 comprises a decoding unit in form of an audio decoder 102 (e.g. an MP3 decoder) and a reverberator unit 106 and an adding unit 109.

[0070]The audio decoder 102 is adapted to decode compressed audio data 101 provided at a compressed audio data input 103 of the audio decoder 102 to generate decoded and decompressed audio data provided at a decompressed audio data output 104. Further, the audio decoder 102 has a quality parameter output 105 at which a quality parameter (e.g. the bit-rate) indicating the quality of the processed audio data is provided. By means of the audio decoder 102 and the quality parameter output 105 first determining means are provided, which first determining means are adapted to determine properties of the decoded audio data and / or of reproduction conditions under which the decoded ...

second embodiment

[0075]In the following, referring to FIG. 2, an audio data processing device 200 according to the invention will be described.

[0076]As can be seen from FIG. 2, encoded data 201 is provided at an input of MP3 decoder 202 that decodes the encoded data 201 to provide decoded audio data 203. The decoded audio data 203 are provided to an audio data analyzing unit 204 for estimating an audio data property parameter 208, namely the bit-rate of the audio data. This audio data property parameter 208 is provided to a first determining sub-unit 206 for determining a first reverberation contribution based on the bit-rate of the audio data. Thus, a first reverberation contribution signal 210 is generated which is provided to an adding unit 212.

[0077]Simultaneously, an environmental condition analyzing unit 205 analyzes an environmental condition, i.e. the physical properties of the environment in which the audio data shall be emitted. For example, it may be detected that an environment does not ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A system (100) of processing audio data, comprising a decoding unit (102) and a determining unit (102, 106) having first determining means (102) and second determining means (106). The decoding unit (102) is adapted to decode encoded audio data to generate decoded audio data. The first determining means (102) is adapted to determine properties of the decoded audio data and/or of reproduction conditions under which the decoded audio data is to be reproduced, and the second determining means (106) is adapted to determine an amount of reverberation and/or of cross-talk to be added to the decoded audio data based on the determined properties of the decoded audio data and/or of the determined reproduction conditions under which the decoded audio data is to be reproduced.

Description

FIELD OF THE INVENTION[0001]The invention relates to a system of processing audio data.[0002]The invention further relates to a method of processing audio data.[0003]Moreover, the invention relates to a program element.[0004]Further, the invention relates to a computer-readable medium.BACKGROUND OF THE INVENTION[0005]Audio compression and audio signal data processing become more and more important, since there is a huge market for devices capable of reproducing compressed audio data related to music, audio books, or the like.[0006]MP3, or more precisely “MPEG-1 Audio Layer 3” is an audio compression algorithm capable of greatly reducing the amount of memory required to store audio and the amount of data needed to reproduce audio, while sounding like a faithful reproduction of the original uncompressed audio to a listener. The MP3 format uses a hybrid transform to transform a time domain signal into a frequency domain signal. MP3 is a lossy compression scheme, meaning that it removes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(United States)
IPC IPC(8): G10L21/00G10L19/02
CPCH04R5/04H04R2420/05H04S1/002H04S1/005H04S2420/03H04S7/305H04S7/308H04S2420/01H04S1/007H04S1/00H04S5/00H04S3/00
Inventor SCHOBBEN, DANIEL WILLEM E.VAN DE PAR, STEVEN LEONARDUS J.D.
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap